JPS61229241A - 光学的読取装置 - Google Patents

光学的読取装置

Info

Publication number
JPS61229241A
JPS61229241A JP7065585A JP7065585A JPS61229241A JP S61229241 A JPS61229241 A JP S61229241A JP 7065585 A JP7065585 A JP 7065585A JP 7065585 A JP7065585 A JP 7065585A JP S61229241 A JPS61229241 A JP S61229241A
Authority
JP
Japan
Prior art keywords
receiving element
light receiving
optical axis
disk
light
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP7065585A
Other languages
English (en)
Japanese (ja)
Other versions
JPH0556568B2 (it
Inventor
Toshiji Takei
利治 武居
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Seiko Instruments Inc
Original Assignee
Seiko Instruments and Electronics Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Seiko Instruments and Electronics Ltd filed Critical Seiko Instruments and Electronics Ltd
Priority to JP7065585A priority Critical patent/JPS61229241A/ja
Publication of JPS61229241A publication Critical patent/JPS61229241A/ja
Publication of JPH0556568B2 publication Critical patent/JPH0556568B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Automatic Focus Adjustment (AREA)
  • Optical Recording Or Reproduction (AREA)
JP7065585A 1985-04-03 1985-04-03 光学的読取装置 Granted JPS61229241A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7065585A JPS61229241A (ja) 1985-04-03 1985-04-03 光学的読取装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7065585A JPS61229241A (ja) 1985-04-03 1985-04-03 光学的読取装置

Publications (2)

Publication Number Publication Date
JPS61229241A true JPS61229241A (ja) 1986-10-13
JPH0556568B2 JPH0556568B2 (it) 1993-08-19

Family

ID=13437883

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7065585A Granted JPS61229241A (ja) 1985-04-03 1985-04-03 光学的読取装置

Country Status (1)

Country Link
JP (1) JPS61229241A (it)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6111647A (en) * 1998-04-22 2000-08-29 Nec Corporation Detection of focal point of objective lens by means of a two-split sensor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6111647A (en) * 1998-04-22 2000-08-29 Nec Corporation Detection of focal point of objective lens by means of a two-split sensor

Also Published As

Publication number Publication date
JPH0556568B2 (it) 1993-08-19

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